Building Hardware Keylogger

Keelog.com post an article of DIY Hardware Keylogger with full documentation, electrical schematics, and program to read the result. This what you need :

• an Atmel AT89C2051 microcontroller (AT89C1051 or AT89C4051 will do as well)
• a 24C512 serial EEPROM chip
• a 12MHz crystal (as small as possible)
• two 33pF capacitors
• one 10uF capacitor (as small as possible)
• one 10kiloohm resistor
• a small push-button
• PS/2 extension cable
• a 4-inch piece of heat-shrinkable tubing

via : hackaday.com

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